CA4 expression levels significantly correlated to B cell infiltration in KIRC, B cell, CD4+ T cell, macrophage, neutrophil and dendritic cell infiltration in LGG, B cell infiltration in PRAD, CD8+ T cell, CD4+ T cell and neutrophil infiltration in UVM (|partial.cor| > 0.2 and p<0.05). The gene discussed is CD8A; the disease is prostate adenocarcinoma.